Meant to say 3.9 seconds down to 0.21, more in tune with the subject line. On Tue, 2010-06-29 at 21:51 +0100, Matthew Dowle wrote: > May be of interest from r-help today, 40 seconds down to 0.21 seconds : > > http://tolstoy.newcastle.edu.au/R/e10/help/10/06/10059.html > > Matthew > >